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Reverse Osmosis 50 75 100gpd RO Membrane Price For Drinking Water



The 50 75 100 gpd residential RO membrane elements are mainly used in a variety of small domestic and commercial RO systems, such as domestic water purifiers and other water purification equipment in hospitals and laboratories.

Specifications and main performance of membrane elements

Type Model Reject (%) Average Permeate GPD (m3/d) Working Pressure & Application  Testing Conditions
Pressure psi (MPa) Solution Concentr. (PPm) Recovery Rate (%)
Household RO Membrane UM1812-50 99.0 50(0.2) Working under extremely low pressure. Applicable to residential   water purifier and water purifying devices in hospital and laboratory water   treatment with TDS lower than 500 ppm. 60 (0.41) 250 15
UM1810-50 97.0 50(0.2)
UM1812-75HR 99.0 75   (0.28)
UM1812-75 97.0 75   (0.28)
UM-2012-100HR 99.0 100   (0.38)
UM-2012-100 97.5 100   (0.38)
UM-2012-150 97.5 150(0.57)
Special Size
    RO Membrane 
UM-2812-200 97.0 200(0.76) working under extremely low   pressure. Applicable to automatic water dispenser and residential drinking   fountain. 100   (0.69) 250 20
UM-3012-300 97.0 300(1.14) 100   (0.69) 250 20
UM-3012-400 97.0 400(1.51) 100   (0.69) 250 20
UM-3013-400 97.0 400(1.51) 100   (0.69) 250 20
UM-3012-500 97.0 500(1.89) 100   (0.69) 250 20
UM-3013-500 97.0 500(1.89) 100   (0.69) 250 20
UM-3013-600 97.0 600(2.27) 100   (0.69) 250 20
UM-3013-700 97.0 700(2.65) 100   (0.69) 250 20

Test conditions: Test pressure: 100 psi (0.69Mpa)

Test fluid temperature: 25 °C

Test solution concentration (NaCI): 250ppm

pH value of test solution: 7.5

Single membrane element recovery rate: 20%

Extreme usage conditions

Maximum working pressure: 300psi (2.07Mpa)

Maximum operating temperature: 110°F (43°C)

Maximum feed sludge density index (SDI): 5 SDI

Feed water free chlorine concentration. <0.1 ppm

Feed water pH range during continuous operation. 3 to 10

pH range of feed water during chemical cleaning: 2~12

Maximum pressure drop across individual membrane elements. 10psi (0.07Mpa)

Membrane element size

All units of the icon are: mm (inch)

Important information

1. The water production listed in the table is an average value, and the difference between the minimum water production of a single membrane element and the nominal value does not exceed 20% of the nominal value.

2. Wet-type membrane elements have been strictly tested before leaving the factory, and use 1 .0% sodium bisulfite (10% propylene glycol antifreeze in winter) solution for storage treatment, and then vacuum packaging, the outer packaging is Cardboard box. In order to prevent the growth of microorganisms during short-term storage, transportation and system standby, it is recommended to soak the components with a protective solution (prepared with RO produced water) containing 1 .0% sodium bisulfite (food grade).

3. The RO produced water in the first hour of operation should be discharged.

4. It is forbidden to add any chemical agents that have an impact on membrane elements during storage and operation.


1. The data and information provided by Hebei UMEK Environment Machine Co., Ltd. in this document are obtained through long-term experiments, and we are confident that these data and information are accurate and effective. Hebei UMEK Environment Machine Co., Ltd. is not responsible for all consequences arising from the use or maintenance of the products by customers not in accordance with the conditions provided in this book. Customers are requested to strictly follow the product design, use and maintenance requirements and keep relevant records!

2. Due to technological progress and product updates, product information may change at any time without prior declaration. Please pay attention to the latest product information of Hebei UMEK Environment Machine Co., Ltd.